Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual o oponente que teve a rodada 1?
 ###Tabelas: CREATE TABLE singles:_23_15–8 (singles:_23_15–8_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Opponent in the final VARCHAR, Score in the final VARCHAR) CREATE TABLE telenovelas_currently_broadcasting (telenovelas_currently_broadcasting_id AUTO_INCREMENT PRIMARY KEY, Country VARCHAR, Telenovela VARCHAR, Translation VARCHAR, Series Premiere VARCHAR, Series Finale VARCHAR, Weekly Schedule VARCHAR, Timeslot VARCHAR) CREATE TABLE competitive (competitive_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Round VARCHAR, Ground VARCHAR, Opponent VARCHAR, Score 1 VARCHAR) CREATE TABLE raiding_career (raiding_career_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Ship VARCHAR, Type VARCHAR, Nationality VARCHAR, Tonnage GRT INT) CREATE TABLE seasonal_ratings_broadcast_history (seasonal_ratings_broadcast_history_id AUTO_INCREMENT PRIMARY KEY, Season INT, Network VARCHAR, Time slot VARCHAR, Season premiere VARCHAR, Season finale VARCHAR, Episode count INT, TV season VARCHAR, Season rank VARCHAR, Viewers (in millions) INT)  
SELECT Opponent FROM competitive WHERE Round = 1